Hi Andy, For deposits you should use the termDeposit FpML product. This is a “first-class” product such as swap or creditDefaultSwap, etc. It is contained within the fpml-fx.xsd (if I remember correctly). You should not use the instrumentTradeDetails. instrumentTradeDetails is to support security transactions such as the ones related to an physical settlement of an option, for example. I am not sure I understand the second part of your question. I think the ISDA Taxonomy refers to OTC derivatives products only. The products you are referring are security products (bond, loans), not OTC, so not in the scope of the taxonomy. Hope this helps. Regards, Marc tradeheader.com